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经盆栽和田间试验结果表明，红壤施用石灰不但能降低土壤酸度，并能显著提高玉米的产量和肥料利用率。盆栽玉米地上部干物质重量提高５９．８％～１５６．５％；１９８９和１９９５年，大田玉米的籽粒产量分别提高８．２％～１４．６％和１９．１％～４３．１％，Ｎ、Ｐ、Ｋ的肥料利用率分别提高１１．２％～１６．１％和２１．２％～４７．３％、２７．６％～３９．５％和１６．５％～３０．０％、６．８％～１９．１％和４．８％～５５．９％。要获得较高的玉米产量和肥料利用率，土壤ｐＨ须提高至６．０以上，而交换性铝降至１．０ｃｍｏｌ（＋）／ｋｇ以下。
The results of potted and field experiments showed that application of lime in red soil could not only reduce the soil acidity, but also significantly increase the corn yield and fertilizer utilization rate. The dry matter weight of above-ground corn increased by 59.8% ~ 156.5% in the potted maize. In 1989 and 1995, the grain yield of field corn increased by 8.2% ~ 14.6% and 19.1% ~ 43.1%, respectively, Fertilizer utilization rates of N, P and K increased by 11.2% -16.1% and 21.2% -47.3%, 27.6% -39.5% and 16.5% -30.0%, respectively, , 6.8% -19.1% and 4.8% -55.9%. In order to obtain higher corn yield and fertilizer utilization, the pH of the soil should be increased above 6.0 while exchangeable aluminum should drop below 1.0 cmol (+) / kg.